Announcement

Collapse

Forum etiquette

Our mission ...

This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

This forum has been around in this format for over 15 years. These rules and guidelines help us maintain a healthy and active community, and we moderate the forum to keep things on track. Please familiarize yourself with these rules and guidelines.


Remain civil and respectful

There are several hundred people who actively participate here. People come from all different backgrounds and will have different ways of seeing things. You will not agree with everything you read here. Back-and-forth discussions are fine but do not cross the line into rude or disrespectful behavior.

Conduct yourself as you would at any other place where people come together in person to discuss their hobby. If you wouldn't say something to somebody in person, then you probably should not be writing it here.

This should be obvious but, just in case: profanity, threats, slurs against any group (sexual, racial, gender, etc.) will not be tolerated.


Stay close to the original topic being discussed
  • If you are starting a new thread choose a reasonable sub-forum to start your thread. (If you choose incorrectly don't worry, we can fix that.)
  • If you are responding to a thread, stay on topic - the original poster was trying to achieve something. You can always start a new thread instead of potentially "hijacking" an existing thread.



Contribute something meaningful

To put things in engineering terms, we value a high signal to noise ratio. Coming here should not be a waste of time.
  • This is not a chat room. If you are taking less than 30 seconds to make a post then you are probably doing something wrong. A post should be on topic, clear, and contribute something meaningful to the discussion. If people read your posts and feel that their time as been wasted, they will stop reading your posts. Worse yet, they will stop visiting and we'll lose their experience and contributions.
  • Do not bump threads.
  • Do not "necro-post" unless you are following up to a specific person on a specific thread. And even then, that person may have moved on. Just start a new thread for your related topic.
  • Use the Private Message system for posts that are targeted at a specific person.


"PM Sent!" messages (or, how to use the Private Message system)

This forum has a private message feature that we want people to use for messages that are not of general interest to other members.

In short, if you are going to reply to a thread and that reply is targeted to a specific individual and not of interest to anybody else (either now or in the future) then send a private message instead.

Here are some obvious examples of when you should not reply to a thread and use the PM system instead:
  • "PM Sent!": Do not tell the rest of us that you sent a PM ... the forum software will tell the other person that they have a PM waiting.
  • "How much is shipping to ....": This is a very specific and directed question that is not of interest to anybody else.


Why do we have this policy? Sending a "PM Sent!" type message basically wastes everybody else's time by making them having to scroll past a post in a thread that looks to be updated, when the update is not meaningful. And the person you are sending the PM to will be notified by the forum software that they have a message waiting for them. Look up at the top near the right edge where it says 'Notifications' ... if you have a PM waiting, it will tell you there.

Copyright and other legal issues

We are here to discuss vintage computing, so discussing software, books, and other intellectual property that is on-topic is fine. We don't want people using these forums to discuss or enable copyright violations or other things that are against the law; whether you agree with the law or not is irrelevant. Do not use our resources for something that is legally or morally questionable.

Our discussions here generally fall under "fair use." Telling people how to pirate a software title is an example of something that is not allowable here.


Reporting problematic posts

If you see spam, a wildly off-topic post, or something abusive or illegal please report the thread by clicking on the "Report Post" icon. (It looks like an exclamation point in a triangle and it is available under every post.) This send a notification to all of the moderators, so somebody will see it and deal with it.

If you are unsure you may consider sending a private message to a moderator instead.


New user moderation

New users are directly moderated so that we can weed spammers out early. This means that for your first 10 posts you will have some delay before they are seen. We understand this can be disruptive to the flow of conversation and we try to keep up with our new user moderation duties to avoid undue inconvenience. Please do not make duplicate posts, extra posts to bump your post count, or ask the moderators to expedite this process; 10 moderated posts will go by quickly.

New users also have a smaller personal message inbox limit and are rate limited when sending PMs to other users.


Other suggestions
  • Use Google, books, or other definitive sources. There is a lot of information out there.
  • Don't make people guess at what you are trying to say; we are not mind readers. Be clear and concise.
  • Spelling and grammar are not rated, but they do make a post easier to read.
See more
See less

Unitron - Apple II clone

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #31
    If it were me, I'd rather hack ProDOS. Having a nonstandard boot logo was always appealing.
    Be polite and I may let you live.

    https://www.youtube.com/playlist?lis...5NBVfKX5471R9U

    Comment


      #32
      I can understand that appeal. Two of the clones I acquired late last year were originally imported by the company I worked for in the early 80's.
      One had indications that I had actually done a repair on it personally. So I have decided to keep the non standard boot name in those machines for nostalgia sake.

      Of course the apple 2e I picked up last week now makes that decision easier since I will have something to boot unpatched prodos when needed.

      Originally posted by KC9UDX View Post
      If it were me, I'd rather hack ProDOS. Having a nonstandard boot logo was always appealing.

      Comment


        #33
        Originally posted by David_M View Post
        I can understand that appeal. Two of the clones I acquired late last year were originally imported by the company I worked for in the early 80's.
        One had indications that I had actually done a repair on it personally. So I have decided to keep the non standard boot name in those machines for nostalgia sake.

        Of course the apple 2e I picked up last week now makes that decision easier since I will have something to boot unpatched prodos when needed.
        That's remarkable, reconnecting with a machine after presumably a rather long time. I've been searching (in Australia for the most part) for a Datamini Apple clone for some time now, but in the past 2 years have picked up 4 others instead from Redstone (sold now though), Maple, Elite and an unknown one that comes up as "VectorIO". Are any of those connected to your former employer?

        Comment


          #34
          No none were sold by the company (Computer Edge) that I worked for. We were the company that fought the landmark copyright case against Apple, we won the first case, they appealed and won then we won the high court appeal. Not long after that the government lobbied by Apple amended the copyright laws to include computer software.

          I got an even bigger surprise than just finding a "Wombat" that I'd worked on. The guy I got it from turned out to be an old client from my after hours business repairing computers. He has collected apples and clones for 30 years and has sheds full of them. He brought over about about 6 complete machines, a few monitors, 20 motherboards, and power supplies for me to repair along with a coup[le of hundred apple cards. One of the cards, an eprom programmer had been modified with a switch to support 27128's. That switch was one used in a trs-80 clone (komtech) we used to sell so I knew it could only have come from where I worked. Imagine my surprise when I turned it over and there was a sticker with my name on it. Turns out it was my own personal eprom programmer from 30 years ago that I'd sold and forgotten about years ago.
          He gave me that card as a gift.

          This is the card in the condition I got it back in.
          14581447_1290427247654431_4044330996632426482_n.jpg

          I've since cleaned it up and got it working although I've not actually tried to program and eprom with it, reading eproms works fine.

          Originally posted by Freestyle View Post
          That's remarkable, reconnecting with a machine after presumably a rather long time. I've been searching (in Australia for the most part) for a Datamini Apple clone for some time now, but in the past 2 years have picked up 4 others instead from Redstone (sold now though), Maple, Elite and an unknown one that comes up as "VectorIO". Are any of those connected to your former employer?

          Comment


            #35
            Hello, I just registered. First post with a funny story. My son (Nigel) got me an Apple II clone for Christmas. I had one in high school (a LONG time ago). I ended up throwing it out years ago (with all of the software I had written for school projects etc). Just no room to store it. I've been reading up on the II recently thinking I might get back into it.

            Guess what. It's this machine. Same serial number. Same little dots on the disk drive top. Came with a commodore colour monitor though.
            I was looking for info on the 80 column card and under images that card showed up and sent me to this forum.

            My first clone was a solder together yourself, mount to a piece of plywood, build your own power supply and used a sony cassette for data storage. Couldn't afford a case or hard drive. Once the IBM clones started coming out, the case, disk drives etc dropped enough in price that I could afford them.

            Small world.





            Originally posted by sid View Post
            I picked up an Apple II clone system locally last week for $50 CAD (~$40 USD).

            This is my first Apple II system, so I went into this knowing nothing, thought I've read a ton in the last week!

            It was listed as unknown condition "as-is". It came with:
            • Zenith monochrome monitor
            • Disk II clone (Labelled "Data Drive" on case, and "Shugart" inside the drive chassis)
            • Unitron computer w/:
              • 48k RAM
              • 16k RAM expansion card (Is this the same as an Apple language card?)
              • parallel printer card
              • 80 column video card
              • floppy drive controller card


            The base computer and monitor seem to work perfectly. The drive seems to function mechanically, but I don't have any Apple II formatted disks to test the drive with. I managed to get ADTPro bootstrapped using the tape ports, but I'm getting errors when using it to format disks - still working on that.

            This is my first real exposure to an "Apple II" system, and I can see why this hardware had/has a loyal following. I've never seen a computer quite like this before. It's like something build by and for a hardware hobbyist... everything is labelled and socketed, and it has basically no custom ICs at all - it's like an "open source" computer - very cool!

            Anyway, I took some pictures when I disassembled it for cleaning and thought you guys might find them of interest.



















            Comment


              #36
              The whole shebang looks like a handsome beast. Is that second card a printer card?
              --------------------------------------------------------------------------------------------
              The Lower Planes BBS Ports 22/23 telnet or SSH
              Pineapple Home of the Hardware Database
              Australian BBS list old style BBS registry listing.

              Comment


                #37
                Time out on editing already hit :/ That 16k card looks quite different to the one in the hardware database... I've added your image to it. http://pineapple.zapto.org/hardware/....php?query=213
                --------------------------------------------------------------------------------------------
                The Lower Planes BBS Ports 22/23 telnet or SSH
                Pineapple Home of the Hardware Database
                Australian BBS list old style BBS registry listing.

                Comment

                Working...
                X